Mid-century vintage early 1950s pulp science fiction magazine, "Astounding Science Fiction" from March, 1950. The cover story for this issue is "New Foundations", by William H. Shiras. There are also stories by L. Ron Hubbard, H. Beam Piper and others.

This is in nice vintage condition. We don't know anything about grading pulp magazines, but this issue does have light wear and age. There is also a "30" in ink on the bottom edge of the pages.